Add gRPC-Web module

dockertest/runner/Dockerfile

@@ -30,6 +30,24 @@ RUN --mount=type=cache,sharing=private,target=/go/pkg/mod \
     # Build grpcurl
     CGO_ENABLED=0 go build -o /usr/local/bin/grpcurl ./cmd/grpcurl
 
+# Use Rust base image for building grpcweb-cli
+FROM rust:trixie AS builder-grpcweb-cli
+
+# Set the working directory for grpcweb-cli
+WORKDIR /usr/src/grpcweb-cli
+
+# Clone the grpcweb-cli Git repository
+RUN git clone https://github.com/DorianNiemiecSVRJS/grpcweb-cli.git /usr/src/grpcweb-cli
+
+# Build grpcweb-cli
+RUN --mount=type=cache,sharing=private,target=/usr/local/cargo/git \
+    --mount=type=cache,sharing=private,target=/usr/local/cargo/registry \
+    --mount=type=cache,sharing=private,target=/usr/src/grpcweb-cli/target \
+    # Build grpcweb-cli
+    cargo build --release && \
+    # Copy executables out of the cache
+    mkdir .dist && cp target/release/grpcweb-cli .dist
+
 # Use Debian base image
 FROM debian:trixie
 
@@ -47,3 +65,6 @@ COPY --from=builder-websocat /usr/src/websocat/.dist /usr/local/bin
 
 # Copy the built grpcurl
 COPY --from=builder-grpcurl /usr/local/bin/grpcurl /usr/local/bin
+
+# Copy the built grpcweb-cli
+COPY --from=builder-grpcweb-cli /usr/src/grpcweb-cli/.dist /usr/local/bin

dockertest/tests/grpcweb/backend/.dockerignore

@@ -0,0 +1,2 @@
+/node_modules/
+/Dockerfile

dockertest/tests/grpcweb/backend/.gitignore

@@ -0,0 +1,2 @@
+/node_modules/
+/hello.proto

dockertest/tests/grpcweb/backend/Dockerfile

@@ -0,0 +1,17 @@
+# Use the official Node.js image
+FROM node:22-alpine
+
+# Set the working directory
+WORKDIR /app
+
+# Copy files into the container
+COPY . .
+
+# Install dependencies
+RUN npm install
+
+# Expose port 3000
+EXPOSE 3000
+
+# Start the application
+CMD ["node", "index.js"]

dockertest/tests/grpcweb/backend/index.js

@@ -0,0 +1,60 @@
+// Based on https://github.com/grpc/grpc-node/blob/master/examples/helloworld/dynamic_codegen/greeter_server.js,
+// with a custom .proto file path
+/*
+ *
+ * Copyright 2015 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+const PROTO_PATH = __dirname + "/hello.proto";
+
+const grpc = require("@grpc/grpc-js");
+const protoLoader = require("@grpc/proto-loader");
+const packageDefinition = protoLoader.loadSync(PROTO_PATH, {
+  keepCase: true,
+  longs: String,
+  enums: String,
+  defaults: true,
+  oneofs: true,
+});
+const hello_proto = grpc.loadPackageDefinition(packageDefinition).helloworld;
+
+/**
+ * Implements the SayHello RPC method.
+ */
+function sayHello(call, callback) {
+  callback(null, { message: "Hello " + call.request.name });
+}
+
+/**
+ * Starts an RPC server that receives requests for the Greeter service at the
+ * sample server port
+ */
+function main() {
+  var server = new grpc.Server();
+  server.addService(hello_proto.Greeter.service, { sayHello: sayHello });
+  server.bindAsync(
+    "0.0.0.0:50051",
+    grpc.ServerCredentials.createInsecure(),
+    (err, port) => {
+      if (err != null) {
+        return console.error(err);
+      }
+      console.log(`gRPC listening on ${port}`);
+    },
+  );
+}
+
+main();